Base | Representation |
---|---|
bin | 1011101101100100101… |
… | …1010100110010010000 |
3 | 201020100211002202211110 |
4 | 2323121023110302100 |
5 | 11244040300321313 |
6 | 232234030013320 |
7 | 20352136542111 |
oct | 2733113246220 |
9 | 636324082743 |
10 | 201212120208 |
11 | 78373aa6040 |
12 | 32bb5647240 |
13 | 15c88498278 |
14 | 9a4b088208 |
15 | 5379aa5ec3 |
hex | 2ed92d4c90 |
201212120208 has 80 divisors (see below), whose sum is σ = 580882946112. Its totient is φ = 59486208000.
The previous prime is 201212120201. The next prime is 201212120251. The reversal of 201212120208 is 802021212102.
It is not an unprimeable number, because it can be changed into a prime (201212120201) by changing a digit.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4625713 + ... + 4669008.
Almost surely, 2201212120208 is an apocalyptic number.
It is an amenable number.
201212120208 is an abundant number, since it is smaller than the sum of its proper divisors (379670825904).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
201212120208 is a wasteful number, since it uses less digits than its factorization.
201212120208 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 9294784 (or 9294778 counting only the distinct ones).
The product of its (nonzero) digits is 256, while the sum is 21.
The spelling of 201212120208 in words is "two hundred one billion, two hundred twelve million, one hundred twenty thousand, two hundred eight".
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